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Client-side: Need to check the file name & extension of Field Type = Field

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Posted on by Zohaib Uddin Khan

2,822

Hello Everyone,

Thanks for reading my question.

I've created a Field of type File and place it on the form. I need to do basic validation of the file such as File extension and File content. Now, with the help of Dataverse REST Builder I've the code to find the file name/extension & file content but the challenge is if I run the code on the fieldOnChange then the needed information doesn't exist in the database by the time. So, I need to find some other event on which I can trigger the code.

4530.FileOnChange.png

this.fileToProcessOnChange = function(executionContext){ 
    prg_DataTransfer.checkFileExtension(executionContext);
}

this.checkFileExtension = function (executionContext){
    $.ajax({
        type: "GET",
        url: Xrm.Utility.getGlobalContext().getClientUrl()   "/api/data/v9.2/prg_temporarydatas(cfb732f7-7acd-4193-9bfc-d4b352669f1c)?$select=prg_filetoprocess_name",
        headers: {
            "OData-MaxVersion": "4.0",
            "OData-Version": "4.0",
            "Content-Type": "application/json; charset=utf-8",
            "Accept": "application/json",
            "Prefer": "odata.include-annotations=*"
        },
        async: true,
        success: function (data, textStatus, xhr) {
            var result = data;
            //console.log(result);
            // Columns
            var prg_temporarydataid = result["prg_temporarydataid"]; // Guid
            var prg_filetoprocess_name = result["prg_filetoprocess_name"]; // Text
            console.log("File Name: "   prg_filetoprocess_name);
        },
        error: function (xhr, textStatus, errorThrown) {
            console.log(xhr);
        }
    });
}

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MikeC282 2,175 on at

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Hey bud,

Could you not just force a save on the record before running the REST API to check for file name and extension? That way it'll exist?

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Zohaib Uddin Khan 2,822 on at

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MikeC282 - Thanks for the reply mate.

Do you mind explaining it further? If I understand you correctly you mean:

OnChange of File I'll do force save.

OnSave event I'll execute the code I've written to check the file name and extension.

With above steps it wouldn't guarantee the needed information doesn't exist in the database by the time. Please let me know your thoughts!

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Bipin D365 28,983 Moderator on at

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Hello,

You can write plugin on Post Create/Update to do the same validation and throw an error when validation failed.

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Zohaib Uddin Khan 2,822 on at

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Thanks Bipin for the workaround. Because of some unforeseen challenges we're not allowed to create any plugin or custom workflow. Having said that I appreciate your reply.

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Bipin D365 28,983 Moderator on at

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Hello,

You can try below code to get the file Name using client api on onSave event-

formContext.getAttribute("cr127_filecolumn").fileName;

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